.teams-fab-container {
    position: fixed;
    right: max(16px, env(safe-area-inset-right));
    bottom: max(16px, env(safe-area-inset-bottom));
    z-index: 2147483000;
    pointer-events: none;
}

.teams-fab {
    --fab-size: 60px;
    --fab-bg: #ffffff;
    --fab-bg-hover: #ffffff;
    --fab-ring: #1f1f1f;
    --fab-shadow: 0 12px 28px rgba(0, 0, 0, 0.24);
    --tooltip-bg: #111827;
    --tooltip-color: #ffffff;
    --tooltip-offset: 12px;

    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: var(--fab-size);
    height: var(--fab-size);
    border-radius: 999px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    background: var(--fab-bg);
    box-shadow: var(--fab-shadow);
    text-decoration: none;
    pointer-events: auto;
    transition: transform 0.18s ease, background-color 0.18s ease, box-shadow 0.18s ease;
}

.teams-fab:hover {
    background: var(--fab-bg-hover);
    transform: translateY(-1px);
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.28);
}

.teams-fab:active {
    transform: translateY(0);
}

.teams-fab:focus-visible {
    outline: 3px solid var(--fab-ring);
    outline-offset: 3px;
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.95), var(--fab-shadow);
}

.teams-fab__icon {
    width: 30px;
    height: 30px;
    display: block;
}

.teams-fab__icon img {
    width: 100%;
    height: 100%;
    display: block;
}

.teams-fab__tooltip {
    position: absolute;
    right: calc(100% + var(--tooltip-offset));
    top: 50%;
    transform: translateY(-50%) translateX(4px);
    opacity: 0;
    visibility: hidden;
    white-space: nowrap;
    background: var(--tooltip-bg);
    color: var(--tooltip-color);
    font-size: 14px;
    line-height: 1.2;
    padding: 8px 10px;
    border-radius: 8px;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
    transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s ease;
    pointer-events: none;
}

.teams-fab__tooltip::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 100%;
    width: 8px;
    height: 8px;
    background: var(--tooltip-bg);
    transform: translate(-50%, -50%) rotate(45deg);
}

.teams-fab:hover .teams-fab__tooltip,
.teams-fab:focus-visible .teams-fab__tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

@media (max-width: 768px) {
    .teams-fab-container {
        right: max(12px, env(safe-area-inset-right));
        bottom: max(12px, env(safe-area-inset-bottom));
    }

    .teams-fab {
        --fab-size: 52px;
    }

    .teams-fab__icon {
        width: 26px;
        height: 26px;
    }

    .teams-fab__tooltip {
        font-size: 13px;
    }
}